They do have a degree of ignorance,a hope rider fell of his bike at an enduro once,lots of people helped him and I even took his bike to the bottom of the line for him as he hurt his shoulder,didn't even aknwoledge me or say thank you to anyone who offered help,might have been the same guy.

Indeed drofluf,sometimes we are also in the "zone",focus usually gets the better of us,I'm probably the same when I'm against the clock which I do once a month,however I do tend to shout thank you iff someone is forced to the side to let me past.